Hazardous Materials Transportation Incident Data for Root Cause Analysis (2009) / Chapter Skim
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Pages 14-22
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From page 14... ...
2.2.1 Rail Equipment -- Train Accident Data Rail Equipment -- Train Accident Data (Bureau of Transportation Statistics) is a document that describes reporting requirements for rail equipment, train accidents, and issues associated with data collection.
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It is further noted that such errors are less likely to be associated with the more severe accidents since they receive greater investigative scrutiny. The following recommendations are made for conducting verification and validation at various levels of the reporting process: 1.
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2.2.4 Transportation Research Circular 231: Truck Accident Data Systems: State-of-the-Art Report Transportation Research Circular 231 (TRB 1981) summarizes the proceedings of a workshop that addressed 1.
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This included comparisons of values of multiple variables for consistency and flagging unusually large values of variables. Of particular interest were findings that there are inconsistencies in how attributes are defined in different accident databases as well as variations in reporting thresholds, making it difficult to conduct direct comparisons.
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Sources of information utilized in the study included data reported by FMCSA; previous studies on the quality of commercial motor vehicle crash data; interviews with FMCSA officials, developers of FMCSA crash data tools, commercial vehicle industry researchers, and public interest organizations; grant documentation for 34 states that participated in FMCSA's safety data improvement program in fiscal year 2004; case studies of six states that participated in that program; and interviews with states that had not participated or were no longer participating in the safety data improvement program. 18 Hazardous Materials Transportation Incident Data for Root Cause Analysis
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Overall, GAO concluded that commercial motor vehicle crash data do not yet meet general data quality standards of completeness, timeliness, accuracy, and consistency. More specifically, for fiscal year 2004, nearly one-third of commercial motor vehicle crashes that states are required to report to FMCSA were not reported and, of those that were reported, there were problems with accuracy, timeliness, and consistency (e.g., 15% of crash records reported to FMCSA could not be matched to the carrier's DOT number)
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2.2.16 Hazardous Materials Serious Crash Analysis: Phase 2 This report (Battelle 2005) details the process that the study team implemented in order to develop a hazmat accident database by combining data from MCMIS, HMIRS, state police accident reports (PARs)
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The authors found significant quality issues with the U.S. Coast Guard accident data, specifically reporting inconsistencies among regions, missing data elements, and inaccurately reported information (including geographic location)
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2.3.1 Data and Analysis Problems As early as 1981, there was acknowledgement that analyzing transportation safety using empirical accident data was problematic. Beginning then, and continuing to the present time, numerous studies have cited the following five basic problems: 1.
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